Kinetic Friction with an upward shove

AI Thread Summary
The discussion revolves around calculating the acceleration of a block on an inclined plane with a coefficient of kinetic friction of 0.17 and an angle of 55°, specifically when the block is given an upward shove and is sliding up the slope. The user has previously calculated the acceleration while sliding down the slope as 7.079 m/s² but has received incorrect results for the upward motion, attempting values of 8.036 and 7.079 m/s². The conversation seeks clarification on the methods used to arrive at these answers. Understanding the forces acting on the block, including friction and gravity, is crucial for solving the problem accurately. The thread highlights the challenges in applying the correct equations of motion in this scenario.
lauriecherie
Messages
44
Reaction score
0

Homework Statement


In the figure below, the coefficient of kinetic friction between the block and inclined plane is 0.17 and angle θ = 55°. What is the block's acceleration (magnitude and direction) assuming the following conditions? (b) It has been given an upward shove and is still sliding up the slope.
I also figured out that the accelertaion (magnitude and direction) when it is sliding down. That answer is 7.079 m/s^2


Homework Equations





The Attempt at a Solution



I've tried 8.036 & 7.079 m/s^2. Both were incorrect :(
 
Physics news on Phys.org
Hi lauriecherie,

lauriecherie said:

Homework Statement


In the figure below, the coefficient of kinetic friction between the block and inclined plane is 0.17 and angle θ = 55°. What is the block's acceleration (magnitude and direction) assuming the following conditions? (b) It has been given an upward shove and is still sliding up the slope.
I also figured out that the accelertaion (magnitude and direction) when it is sliding down. That answer is 7.079 m/s^2


Homework Equations





The Attempt at a Solution



I've tried 8.036 & 7.079 m/s^2. Both were incorrect :(


What did you do to get those answers?
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »
Thread 'A cylinder connected to a hanged mass'

Thread 'A cylinder connected to a hanged mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Finding the work done by a block
Replies
4
Views
3K
Physics Homework -- block pressed against a wall is sliding....
Replies
4
Views
3K
Physics homework help needed -- A mass sliding down a ramp with friction
Replies
14
Views
3K
Does coefficient of kinetic friction depend on speed?
Replies
16
Views
5K
Coefficient of kinetic friction of a block sliding across the ceiling
Replies
7
Views
1K
Coefficient of kinetic friction?
Replies
21
Views
2K
Variable friction on an inclined plane and maximum velocity
Replies
33
Views
3K
How to find the coefficient of kinetic friction
Replies
4
Views
3K
What's the coefficient of kinetic friction?
Replies
8
Views
3K
Calculating Kinetic Friction Coefficient for Sliding Soccer Player
Replies
13
Views
2K

Hot Threads

Recent Insights

Back
Top